Uncharged Definition and 43 Threads

I understand that the particle will be polarised according to its dielectric constant and the electric field across the capacitor. However, since it is similar to an insulator and electrons do not move in and out of the particle easily, the particle will not be charged. How then will...

I worked this problem out in griffiths and my work checks out for for the potentials, b.c. and the coefficients. I will post the solutions just because my work is a little harder to read. What I am having trouble finding is the dipole moment of the conductor. I know the formula for dipole...

I came across the following explanation from the famous book of Sears and Zemansky which I am unable to understand. I can get the initial part where a positive charge goes to the top plate of C1 since the point a is at a +ve potential causing free electrons to transfer from top plate of C1 to...

Tecd

Hi there, tried doing this question but not sure if what I did for part b is right? Appreciate any help! Thanks

I have already solved up to after the switches are flipped, and all the charge is on C1. See the second attached image for a detailed diagram of the situation after the switches are flipped. However, the notes then say that all the charge is trapped between C1 and C2, which I don't understand...

Homework Statement A capacitor of capacitance 10 uF is raised to a potential difference of 150V. After disconnecting from the battery, it is connected to a capacitor of capacitance 5 uF. Find the energy of the system. Homework Equations Energy supposed to be equal in the first case and second...

A charged and an uncharged particle collide. What will be their charges after the collision? The average of the total charge?

What happens to the velocity? Say we have a piece of space debris in free fall. It has a particular velocity at a given time. Then say at some later time it's bombarded with ionic gas or something that causes it to become charged. Does the velocity change? My guess would be yes, because the...

Homework Statement using Laplace principle find potential inside an uncharged spherical shell of finite width. shell is placed in an electric field E in z-axis direction. Homework Equations in this equation u is potential. equation is called 2-D Laplace’s equation. The Attempt at a Solution...

Homework Statement X and Y are two uncharged metal spheres on insulating stands, and are in contact with each other. A positively charged rod R is brought close to X. Sphere Y is then physically moved away from X. What are the final charge states of X and Y? Homework Equations N/A The...

Homework Statement Find the potential of an uncharged metal sphere provided that a point charge q is located at a distance r from its center 2. The attempt at a solution As far as the charges are concerned , some negative charges will build up at the side of the charge because of induction ...

Particle accelerators use the electromagnetic field to accelerate charged particles. Would it be possible to build a particle accelerator for uncharged particles? Say we are given a narrow beam of neutrons. How could we accelerate them so that the accelerated particles were still in a...

Homework Statement Homework EquationsThe Attempt at a SolutionAssuming zero of the potential is at infinity , the potential refers to the potential difference between the each conductor and infinity . The potential of the uncharged conductor would be due to three charges, positive induced...

Homework Statement Given v0 c1c2 r1 need to find the current on r1 picture switch 1 is closed for long time and on t=0 opened and switch 2 is closed Homework EquationsThe Attempt at a Solution in the attached file i was trying to use kvl assuming that q0(charge on cap before opening switch...

I have always been told that a charged object will attract an uncharged on when brought close (but do not touch) the uncharged object. However, wouldn't this depend on whether the uncharged object is an insulator or an conductor? This is my reasoning, but I am not sure if it is correct: When...

I know that the curvature of space-time around an uncharged mass is different from that around a charged mass (specifically, one situation is characterized by the Schwarzschild metric and the other by the Reissner-Nordstorm metric). But consider an uncharged particle in each situation. Wouldn't...

Homework Statement Imagine if you have two charged plates which have the same magnitude but opposite in charges. If you place an uncharged object near of the positive plate what will happen? Homework Equations I don't think it depends on equations The Attempt at a Solution Okay, so If you rub...

Homework Statement An uncharged capacitor is connected to a charged capacitor as shown: The ends are left as it is. Will the charges redistibute? Homework Equations None The Attempt at a Solution I think it won't. Let the first capacitor be charged with charge Q. Before closing the switch...

Global phase invariance has been identified with the conservation of electric charge. Local phase invariance via the coupling of the wave function/field with the EM four-vector has been identified with charged particles interacting with the EM field. Am I correct in assuming that, except for...

The mass of a particle will increase as its velocity increases according to special relativity. This has been confirmed in countless experiments in which particle accelerators accelerate charged particles. What type of experiments have confirmed this for uncharged particles? Thanks in advance.

A complex classical field Φ of particles is, by itself, invariant under global phase changes but not under local phase changes. It is made gauge invariant by coupling it with the EM potential, A, by substituting the covariant derivative for the normal partial derivative in the Lagrangian. But...

Hey guys, Im currently looking for a way to calculate the energy loss of a particle in a gas. This will help me to understand deposition processes better. The particles I am looking at are heavy, uncharged ones (e.g. metal atoms). Stopping power is not a viable concept without charge, and Bethe...

An uncharged spherical conducting shell surrounds charge -q at the center of the shell. Then a charge+ +3q is placed on the outside of the shell. When static equilibrium is reached, the charges on the inner and outer surfaces of the she are respecteively... +q,-q is the answer. Does the +3q...

Homework Statement Consider a point charge q > 0 which is surrounded by a hollow metal sphere (uncharged) with inner radius R1 and outer radius R2. Use Gauss Law to determine the electric field E=E(r)er in the following regions: (i) 0 < r < R1 (ii) R1 < r < R2 (iii) r > R2 Homework...

Planets are said to be uncharged... Leave about the rest but we consider Earth as a negative potential (I suppose)... :-p please clarify my doubt...

For my electronics work I have a question to answer: "A 1000V source is used to fully charge a 1μF capacitor. The capacitor is then disconnected from the source and connected to two additional capacitors (2μF and 8μF) as shown in the circuit schematic below. a) Calculate the final voltage...

My book says, initially, an uncharged capacitor acts as a short circuit and we eliminate any resistors in parallel with the capacitor. My question is, how can a capacitor be a short circuit if there is a gap between them? How does current go through a capacitor initially?

Homework Statement See figure attached. Homework Equations The Attempt at a Solution See figure attached for my attempt. I'm confused as to how I am supposed to use these 3 electric fields, E1, E2 and E3, as well as the potential of the middle shell, V = 1kV (with reference...

I wondered about the photon exchange mechanism when my AP physics teacher taught about it. Essentially, it's like shooting a basketball back and forth. I don't see the attractive part, but's that what the analogy was on the internet thing used. I assume it's in the math, anyway. But my...

Homework Statement Two identical metal spheres, each with a positive charge q, are separated by a centre-to-centre distance r. What effect will the following change have on the magnitude of the electric force exerted on each sphere by the other: -one sphere is touched by an identical...

Its easy to understand how a photon can transfer momentum to a charged particle like an electron, but I'm not sure how it would interact with something like a neutron or neutrino. Could someone explain briefly?

Homework Statement A rechargeable AA battery with a mass of 25.0g can supply a power of 1.20W for 50.0mins. What is the difference in mass between a charged and an uncharged battery? Homework Equations W = Pt W = K = gmc^2 - mc^2 where g = 1/(1-(v/c)^2)^(-1/2) E (total) = gmc^2 = K...

Homework Statement A positive point charge q is placed at the center of an uncharged metal sphere insulated from the ground. The outside of the sphere is then grounded as shown. A is the inner surface and B is the outer surface of the sphere. Which of the following statements is correct? a...

circuit with an uncharged capacitor -- desperate Homework Statement http://img91.imageshack.us/img91/7533/physicsimage.gif Switch S has been open for a long time. It is closed suddenly at t=0. A long time later, it is opened. Determine the potential across and the current through each...

Particle accelerators use EM to guide and accelerate charged particles to close to the velocity of light. Is it conceptually possible to build a particle accelerator to accelerate uncharged particles that have a non-zero rest mass? Thanks in advance.

Homework Statement A point charge is placed at a distance "d" from a huge uncharged metal (slab or plate).[Comment: I'm not sure. Work out both cases]. Calculate the force with which the charge attracts the plate. Homework Equations The Attempt at a Solution The field inside the...

[SOLVED] negative rod to uncharged metal ball: Homework Statement If a negatively charged rod is held near an uncharged metal ball, the metal ball: 1. becomes positively charged. 2. becomes polar. 3. Effect cannot be determined. 4. becomes negatively charged. 5. is unaffected. The...

The only formulas for forces due to a magnetic field have to do with a charged body. How can you calculate the force acting on an uncharged body? And if there is no force, why can you pick up a neutral paper clip with a magnet?

a coil of wire is connected to an uncharged capacitor in a magnetic field... Homework Statement A 10-turn coil of wire having a diameter of 1.0 cm and a resistance of 0.20 ohms is in a 1.0 mT magnetic field with the coil oriented for maximum flux. The coil is connected to an uncharged 1.0...

Since relativity theory requires that the value of c be the same for all observed physical processes regardless of relative velocity, it seems reasonable to hypothesize that matter that has no electromagnetic interaction with the rest of the universe may be accelerated to arbitrarily high...

Hi I was just wondering what the answer to the following question would be: If you bring a positively charged rod to an uncharged electroscope causing the vanes or leaves inside to diverge, are negative charges attracted to the knob of the electroscope or do positive charges repel to the...

I can see how you can attract conductive objects with an electric field, but I'm wondering if it's actually possible to use some sort of electromagnetic phenomena to repel objects, like in Star Trek, or something Also, how does a Tokamak fusion reactor keep the plasma in place with magnetic...